Well, that's a difficult question. Here's a couple answers.
If you're talking about the most total trophies won, it's Liverpool FC. They have won eighteen football league titles (albeit none since 1990 - still a joint English record,) seven F.A. Cups, seven League cups (English record,) fifteen F.A. Community shields, five UEFA Champions Leagues (English record,) three UEFA Europa Leagues (English record,) and three UEFA Super Cups.
However, in terms of form in the last 20 years, the answer is Manchester United. They have won eleven Barclays Premier League titles, the last being in 2009. They have also won the UEFA Champions League twice in the last twenty years (1999 and 2008.)
And lastly, if you mean in terms of the past season, the answer is Chelsea FC. They won the 2010 Barclays Premier League title.
The rivalry between European football teams is legendary, infamous even. Please be aware, that the answers to this question are likely to be as varied as the people who hold the opinion. You may add to the end of the list, but debate or inappropriate responses will be addressed by WikiAnswers supervisors as prescribed by WikiAnswers Rules and Policies:
in England there is a football/soccer team called Liverpool. THEY ARE THE BEST.
middlesbrough fc
Manchester united
Tottenham hotspur
Manchester United.. CHAMP19NS
there best supporter is rob didds
yes they're probably the best team in the world
vatican city but the best club team is gillingham fc from kent England
New England Patriots
0f course they are
For England to win the Crazy WORLD CUP
New England PatriotsAtlanta FalconsANY NEW YORK TEAM